Carvalhal, C., S. Deusdado, and L. Deusdado. “Crawling PubMed With Web Agents for Literature Search and Alerting Services”. ADCAIJ: Advances in Distributed Computing and Artificial Intelligence Journal, vol. 2, no. 1, May 2013, pp. 19-22, doi:10.14201/ADCAIJ2013241922.